package zjh.rbac.service.array;

import   zjh.rbac.domain.dto.RoleDto;
import   zjh.rbac.domain.entity.Role;
import   zjh.rbac.service.IRoleService;
import   zjh.rbac.service.IUserService;
import   zjh.rbac.domain.vo.Result;
import   zjh.rbac.domain.vo.RoleVo;




public class RoleService extends BaseService<Role, RoleDto, RoleVo> implements IRoleService {

    private static IRoleService singleton;
    private IUserService userService;

    private RoleService() {
        data = new Role[DATA_SIZE + 1];
        temp = new RoleVo[DATA_SIZE];
    }

    public static IRoleService getInstance() {
        if (singleton == null) {
            singleton = new RoleService();
        }
        return singleton;
    }

    @Override
    RoleVo convertToVo(Role role) {
        return new RoleVo(role.getId(), role.name, role.dataScope);
    }

    @Override
    Role createEntity(RoleDto dto, int id) {
        return new Role(id, dto.name, dto.dataScope);
    }

    @Override
    void updateEntity(RoleDto dto, Role role) {
        role.name = dto.name;
        role.dataScope = dto.dataScope;
    }

    @Override
    public Result delete(int id) {
        if (!existsById(id)) {
            return Result.failure("删除失败，不存在该数据");
        }

        if (userService == null) {
            userService = UserService.getInstance();
        }

        if (userService.roleInUse(id)) {
            return Result.failure("删除失败，还有用户属于该角色，不能删除！");
        }

        data[id] = null;
        return Result.success("删除成功", null);
    }

}
